A case that makes the hair on the back of your neck bristle 

This episode illustrates a critical part of policing: if the hair on the back of your neck is bristling, trust your instincts and investigate!
Original episode description:
Sgt. David and his officer-in-training are working the graveyard shift on a cold winter night when they scout out an abandoned lot in their small town that’s a well-known spot for illegal activity. As they approach, they see a car with its lights off and two passengers inside: a man in his 50’s and a young girl seated on the passenger’s side. Though there’s no crime in just sitting in your car, Sgt. David has a gut feeling that something is very wrong. What he discovers is even worse than what he suspected.